Illuminating tile



FIPH

(No Model.) i

c. W. MARK. i ILLUMINATING TILE.

Patented Ju1y14,1891.

W/TNESSES:

nee

IN VEA/TOR BycjL/nw 772602.

ATTORNEYS iJNITED STATES PATENT OFFICE.

CHARLES 1V. MARK, OF NEV YORK, N. Y.

lLLUlVilNATlNG-TILE.

SPECIFICATION forming part of Letters Patent N 0. 456,046, dated July 14, 1891.

Application filed April 4, 1891. Serial No. 387,604:- (NO model.)

To all whom, t 77mg concern:

Be it known'that I, CHARLES XV. MARK, of the city, county, and State of New York, have invented a new and useful Improvement in Illuminating-Tiles, of which the following is a full, clearand exact description.

My invention relates to improvements in illuminating-tiles; and the object of my invention is to produce a lens for tiles of the character described, which lens is constructed in such a manner that it cannot be readily obscured by dirt, and (hat it will give a great diftusionpt light, and will also throw the light to one side of the lens.

. To this end my invention consists in a lens I'for illuminating-tiles, which lens is con- .f structedsubstantiall yashereinafter described f and claimed.

Reference is to be had to the accom panyin g drawings, forming a part of this specification,

in which similar figures of reference indicatev corresponding parts in all the views.

Figure 1 is an inverted perspective view of a lens embodying my invention. Fig. 2 isaside elevation of the same, looking edgewise upon the lugs. Fig. 3 is a side elevation, looking upon the sides of the lugs. Fig. 4 is an inverted perspective view showing the lenses secured in a frame, and Fig. 5 is an inverted perspective view of a modified form of lens.

The lens 10 is fiat for the most part, and, as shown in the drawings, is square; but itmay be made circular or in any desired shape, and its surface may be more or less rounded it desired. The lens is provided on the underside and near opposite edges with lugs 11 and 12, which are vertical on one side and inclined on the other, the points of the lugs being arranged downward, and the lug 1l is long enough to extend nearly across the tile, while the lugs 12 are much shorter and are placed opposite the lng 11, an. opening being lett between them, so that the rays of light from the the lug 1l may be directed through lthe opening and into the space below.

The lenses are secured in a frame 13 in any of the common ways, and any suitable frame may be used, and it is obvious that the outer edges of the lenses maybe shaped to conform with the kind of frame in which they are to be supported. The lenses are arranged, as described, with the lugs extending downward, and the rays of light, which pass downward through each lens, will be deflected by the lugs 1l and 12 and thrown to one side of the lens, so as to light the space at one side as well as the space which is immediately beneath the lens.

rlhe lugs are arranged in the drawings with their inclined sides in the same direction, but they may be diiterently arranged, if desired, and the inclination of the lugs is according to the direction in which the light is to be deflected. It desired, the long lug may be dispensed with and two ofthe smallerlugs 12 substituted for it, a space being left between them, as shown in Fig. 5, and there will thus be two lugs on opposite sides of the lenses, and a fifth lug of the same kind may be placed centrally between them. A lens constructed in this manner will have much the same effect as the lens shown in the main views, and it is obvious that in either case the lugs will not be readily covered by dirt, and if more or less dirt should collect between them the light will still pass downward through the lugs and be diffused into the space beneath and at one side of them.

Having thus fully described my invention, I claim as new, and desire to secure by Letters Patent- 1. In illuminating-tiles, a lens having a series of lugs of dissimilar lengths on one side, the lugs having one side perpendicular to the base-line of the lens and the opposite side inclined, substantially as described.

2. In illuminating-tiles, a lens having parailel rows of inclined lugs on its under side, the lugs being arranged so that the body ot' one will come opposite the opening between the opposite lugs, substantially as described.

CHARLES YY. MARK.

Witnesses:

WARREN B. I-IUTCHINsoN, E. M. CLARK. 

